Pneumatic cleaner.



S. MARKSTEIN.

PNEUMATIC CLEANER.

APPLICATION FILED NOV.19, 1908.

Patented Nov. 30, 1909.

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S. MARKSTEIN..

PNEUMATIC CLEANER.

APPLICATION FILED NOV.19,1908.

942, 37 Patented Nov. 30, 1909.

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PNEUMATIC CLEANER.

APPLICATION FILED NOV. 19, 1908.

942,037. Patented Nov. 30, 1909.

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UNITED STATES PATENT OFFICE.

SOLOMON MARKSTEIN, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO

MANUFACTURERS OUTLET (30., OF

YORK.

W YORK, N. Y., A CORPORATION OF NEW PNEUMATIC CLEANER.

Specification of Letters Patent.

Patented N ov. 30, 1909.

Application filed November 19, 1908. Serial No. 463,424.

filtered air out of the apparatus. This object is accomplished by my invention, as will appear below.

For a more particular description of my .invention, reference is to be had to the accompanying drawings, forming a part hereof, in which,

Figure 1 is a perspective view of my improved apparatus. Fig. 2 is a sectional view of the nozzle. Fig. 3 is a side elevation partially in section. of the fan. Fig. 4 is a longitudinal section through the apparatus. Fig. 5 is a. plan view of a portion of the filtering apparatus. Figs. 6, 7 and 8 are detail views of parts of the same.

Throughout the variousviews of the drawings, similar reference characters designate similar parts.

My improved apparatus 1 consists essentially of a, nozzle 2 for gathering the dust, which nozzle is connected to a pipe 3, in the conventional manner, and to a flexible hose 4, of the usual form, which is connected by a suitable union or similar device 5 with a stud pipe-f the filter 7 in the casing 8, and from the filter 7 the purifiedv air is drawn through a suitable passage 9 by a fan 10 which is rotated by a motor 11 and throws the purified air out of the apparatus through suitable perforations 12. The nozzle 2, pipe 3, hose 4; and coupling 5 need no particular description because they may be of the conventional form.

The casing 8 is preferably made in the form of an ordinary chest with its bottom 13 mounted on suitable rollers in the conventional manner so as to facilitate its movement from place to place. Its top 14 has handles 15 by which it may be lifted, and one end 16 has a suitable opening 17 through which the union 5 enters. The end 16 is preferably hinged by hinges 18 to a side 19 and the other side 20 is connected to the end 16 by means of a suitable fastener or lock o enin 9 in the artition 22. The filter 7 p z: p

also has a top 24 secured by bails 25, or in any other suitable manner, and the packing 26 is employed to make a tight joint. The filter 7 is also provided on its interior with a vertical partition 27 with a horizontally disposed flange 28 at its upper end, which is adjacent to a depending flange 29 secured to the top 24. The partition 27 and the sides and one end of the filter 7 make a watertight compartment in which water 30 is allowed to stand. stud-pipe is provided with an elbow 31 which runs to a funnel 32 carried by any suitable support from the walls of the filter. The funnel 32 extends well below the upper surface of the water 30 so that air passing therethrough must necessarily bubble up through the water. Immediately in the rear of the partition 27 are flanges 34:- which run vertically and parallel and adjacent to said partition, and between them is a frame 35 in which is a filtering medium such as cotton, 36. The frame 35 consists of strips 37 and wires 38, so that air may pass through the same from the space above the water 30 to the passageway 9. The packing or cotton 36 is so placed in the frame 35 that all air passing through the filter 7 must pass through the cotton, whereby the air becomes purified and free from dust and iin-' purities incident to its use. The packing 36 andframe 35 constitute a screen. The rear wall of the filter 7 is provided with a perforation 39 which is adjacent to a packing 40 held between the filter 7 and the partition 22. The interior of the opening 9 and the interior of the casing 8 back of the partition 22 is provided with suitable lining 41, preferably of asbestos, so that under no circum stances can the electric motor set the apparatus afire. The fan 10 is placed so as to draw air through the opening 9 and pass the same out through the openings 12. This fan preferably consists of two parallel disks 42 and 43, respectively, which are held in The pipe 6 which is a fixed relation "by means of short blades 44. preferably placed as shown in Fig. 3, and two long blades 45, all of which have been found to be very efficient for the purposes intended. The fan 10 is also provided with a central base 46 on which it is mounted and which connects it with the shaft {l7 of the motor 11 in the conventional manner. The motor 11 may be of any suitable form and is mounted on a suitable base 48 and connected by a cable 49 with any suitable source of electric supply which may be cut off by turning the snap switch 50. Near the fan 10 are placed as many perforations 12 as convenient, the greater number, of course, being on the bottom.

From the foregoing, the operation of my improved apparatus will be readily understood.

The switch 50 is turned whereby electric energy is supplied through the cable 49 and the motor 11 is run, thereby rotating the fan 10 which in turn draws the air through the opening 9 and the filter 7 from the pipe 6 which is connected to the nozzle 2, as above described. The nozzle 2 is rubbed over the portion to be cleaned and disturbs the surface of the same and exhausts therefrom thereby carrying the dust and other impurities through the nozzle 2 and the parts connected therewith to the filter 7 which draws the air through the water and then through the packing 36 in the frame 35.

As shown in Fig. 4, the fan 10 is preferably made very narrow and run at a high eaaoev speed because I have found that this results better than using a larger fan and a slower speed.

I attach importance to the combined action of the vertically disposed flange 29 in conjunction with the horizontally disposed flange 28, for the reason that they cause the air to pass upward to a high point upon leaving the water, giving the air sufiicient time to deposit its entire content of superfluous moisture before it passes through the sponge, or other fibrous filling 36, of the frame 85.

Having described my invention, what I claim is:

In a machine of the class described, a filter composed of a vessel having openings at its front and rear and an opening in its top, a cover for closing said opening, bails and a packing adjacent to said cover and a partition extending near said cover and provided with a horizontally disposed flange and a vertically disposed flange on said cover adjacent to said last mentioned flange, a pipe with an elbow extending from said forward opening to near the bottom of said filter, means for'supporting the same and a frame with a packing held therein adjacent to said partition.

Signed in the city, county and State of New York, this 17th day of November 1908.

SOLOMON MARKSTEIN.

Witnesses:

HENRY B. PEIFFER, JAMES L. MOEWEN. 

